Insect guard



FIG. 1 is a side elevational view of an insect guard, showing my new design.

FIG. 2 is a side elevational view, rotated ninety degrees in a counter-clockwise direction relative to FIG. 1.

FIG. 3 is a vertical sectional view taken along the medial plane of FIG. 1, with the filler cap removed.

FIG. 4 is a top plan view of FIG. 1; and

FIG. 5 is a bottom plan view of FIG. 1. 

The ornamental design for an insect guard, as shown and described. 